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This commit is contained in:
Jakub Jelinek
2007-07-31 13:33:18 +00:00
parent d6220e9ee3
commit 32c075e1f0
448 changed files with 13841 additions and 10982 deletions
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43
resolv/nss_dns/dns-network.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1996, 1997, 1998, 1999, 2002, 2004
/* Copyright (C) 1996, 1997, 1998, 1999, 2002, 2004, 2007
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Extended from original form by Ulrich Drepper <drepper@cygnus.com>, 1996.
@ -102,7 +102,8 @@ extern int __ns_name_unpack (const u_char *, const u_char *,
/* Prototypes for local functions. */
static enum nss_status getanswer_r (const querybuf *answer, int anslen,
struct netent *result, char *buffer,
size_t buflen, lookup_method net_i);
size_t buflen, int *errnop, int *h_errnop,
lookup_method net_i);
enum nss_status
@ -142,7 +143,8 @@ _nss_dns_getnetbyname_r (const char *name, struct netent *result,
? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND;
}
status = getanswer_r (net_buffer.buf, anslen, result, buffer, buflen, BYNAME);
status = getanswer_r (net_buffer.buf, anslen, result, buffer, buflen,
errnop, herrnop, BYNAME);
if (net_buffer.buf != orig_net_buffer)
free (net_buffer.buf);
return status;
@ -218,7 +220,8 @@ _nss_dns_getnetbyaddr_r (uint32_t net, int type, struct netent *result,
? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND;
}
status = getanswer_r (net_buffer.buf, anslen, result, buffer, buflen, BYADDR);
status = getanswer_r (net_buffer.buf, anslen, result, buffer, buflen,
errnop, herrnop, BYADDR);
if (net_buffer.buf != orig_net_buffer)
free (net_buffer.buf);
if (status == NSS_STATUS_SUCCESS)
@ -240,7 +243,8 @@ _nss_dns_getnetbyaddr_r (uint32_t net, int type, struct netent *result,
static enum nss_status
getanswer_r (const querybuf *answer, int anslen, struct netent *result,
char *buffer, size_t buflen, lookup_method net_i)
char *buffer, size_t buflen, int *errnop, int *h_errnop,
lookup_method net_i)
{
/*
* Find first satisfactory answer
@ -260,8 +264,25 @@ getanswer_r (const querybuf *answer, int anslen, struct netent *result,
{
char *aliases[MAX_NR_ALIASES];
char linebuffer[0];
} *net_data = (struct net_data *) buffer;
} *net_data;
uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct net_data);
buffer += pad;
if (__builtin_expect (buflen < sizeof (*net_data) + pad, 0))
{
/* The buffer is too small. */
too_small:
*errnop = ERANGE;
*h_errnop = NETDB_INTERNAL;
return NSS_STATUS_TRYAGAIN;
}
buflen -= pad;
net_data = (struct net_data *) buffer;
int linebuflen = buflen - offsetof (struct net_data, linebuffer);
if (buflen - offsetof (struct net_data, linebuffer) != linebuflen)
linebuflen = INT_MAX;
const unsigned char *end_of_message = &answer->buf[anslen];
const HEADER *header_pointer = &answer->hdr;
/* #/records in the answer section. */
@ -319,10 +340,7 @@ getanswer_r (const querybuf *answer, int anslen, struct netent *result,
if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
{
if (errno == EMSGSIZE)
{
errno = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
goto too_small;
n = -1;
}
@ -346,10 +364,7 @@ getanswer_r (const querybuf *answer, int anslen, struct netent *result,
if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
{
if (errno == EMSGSIZE)
{
errno = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
goto too_small;
n = -1;
}